{"id":144566,"date":"2025-10-09T17:11:54","date_gmt":"2025-10-09T15:11:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/sistema-szhatiya-openzl-operezhayushhaya-zstd-i-xz-po-skorosti-i-urovnyu-szhatiya-strukturirovannyh-dannyh"},"modified":"2025-10-09T17:11:54","modified_gmt":"2025-10-09T15:11:56","slug":"sistema-szhatiya-openzl-operezhayushhaya-zstd-i-xz-po-skorosti-i-urovnyu-szhatiya-strukturirovannyh-dannyh","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/sistema-szhatiya-openzl-operezhayushhaya-zstd-i-xz-po-skorosti-i-urovnyu-szhatiya-strukturirovannyh-dannyh","title":{"rendered":"OpenZL tihenduss\u00fcsteem, mis \u00fcletab Zstd ja XZ kiiruselt ja tihendustasemelt struktureeritud andmete puhul","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Meta* ettev\u00f5te tutvustas OpenZL tihendamise ja dekompressimise t\u00f6\u00f6riistu, mis demonstreerivad Zstd ja XZ formaatidega v\u00f5rreldes k\u00f5rgemat tihendustaset ja kiiruset. OpenZL on loodud t\u00f5husaks struktureeritud andmekogude tihendamiseks, n\u00e4iteks masina\u00f5ppe rakendustes ja ladudes, kus on mitmekesised korduvad andmet\u00fc\u00fcbid. OpenZL kood on kirjutatud C\/C++ ja avaldatud BSD litsentsi alusel. <\/p>\n

Astronoomiliste t\u00e4htede SAO katalooge kokkusurudes v\u00f5imaldas OpenZL t\u00f6\u00f6riist andmete suurust v\u00e4hendada 2.06 korda, samas kui zstd algoritm surus informatsiooni 1.31 korda ja XZ 1.64 korda. Kompressioonikiiruselt \u00fcletas OpenZL zstd-d kahel korral (203 MB\/s v\u00f5rreldes 115 MB\/s) ja XZ-d 65 korda (203 MB\/s v\u00f5rreldes 3.1 MB\/s). Lahtipakkimise kiirus OpenZL-is osutus zstd-st veidi aeglasemaks (822 MB\/s v\u00f5rreldes 890 MB\/s) ja 27 korda kiiremaks kui XZ.

\"OpenZL<\/center> <\/p>\n

OpenZL ei ole \u00fcldotstarbeline algoritm ja n\u00e4itab h\u00e4id tulemusi ainult eelnevalt tuntud struktuuriga andmete puhul. OpenZL t\u00f6\u00f6 seisneb kohandavas pakendaja genereerimises edastatud andmete kirjelduse p\u00f5hjal. Selle tulemusena luuakse andmete tihendamiseks kood, mis on optimeeritud konkreetse andmeformaadi jaoks. \u00dchendav utiliit, mis on \u00fchilduv k\u00f5igi genereeritud pakendajatega, kasutatakse andmete lahtipakimiseks. <\/p>\n

Kompresseerimine ja lahtipakkimine toimub \u00fche utiliidi \u00abzli\u00bb v\u00f5i raamatukogu libopenzl abil. Andmestruktuur on kirjeldatud profiilide vormis. Koos on kaasas komplekt eelm\u00e4\u00e4ratud profiile, mis kirjeldavad t\u00fc\u00fcpilisi salvestusvorminguid. N\u00e4iteks CSV formaadi profiil v\u00f5i andmete, mis on salvestatud 64-bitiste arvude massiivina. Kompressioon piirdub profiili valimisega k\u00e4suga \u00abzli list-profiles\u00bb ja pakkimisprotsessi k\u00e4ivitamisega k\u00e4suga \u00abzli compress \u2014profile profiili_nimi\u00bb. Lahtipakkimiseks piisab k\u00e4su \u00abzli decompress\u00bb k\u00e4ivitamisest. <\/p>\n

Spetsiifiliste formaatide puhul tuleb luua oma profiil, kasutades k\u00e4sku \u00abzli train\u00bb, mis avab andmetes mustrid ja loob profiili optimaalse kompressioonitasemega. Kasutades valikut \u00ab\u2014pareto-frontier\u00bb saab loodud profiili moderniseerida pakkimise v\u00f5i lahtipakkimise kiirusest loobumise arvelt. Komplekssete formaatide jaoks, millel on sisemised struktuurid, ja andmestruktuuride t\u00f6\u00f6tluse ettekirjutuste m\u00e4\u00e4ratlemiseks v\u00f5ib kasutada SDDL-i (Simple Data Description Language). <\/p>\n

Optimaalsete pakkijate loomise meetod p\u00f5hineb primitiivsete kodeerijate kogumi rakendamisel, millest iga\u00fcks on k\u00f5ige t\u00f5husam eri t\u00fc\u00fcpide ja andmeseeriate jaoks. Kompressiooniks luuakse suunatud ahelata graaf andmete t\u00f6\u00f6tlemiseks, mille s\u00f5lmedeks on koodekid ja servad \u2014 t\u00f6\u00f6tlemise keskkonna andmevariandid. S\u00f5ltuvalt sissetulevate andmete t\u00fc\u00fcbist valitakse koodekite ahel, mis optimaalselt surub kokku sissetuleva andmeelemendi. Sel moel surutakse faili pealkiri kokku \u00fche koodekiga, tervikandmed teisega, kasvava loenduri v\u00e4ljad kolmandaga ning stringiandmete v\u00e4ljad neljandaga.

\"OpenZL<\/center>
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Meta* \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 \u0434\u043b\u044f \u0441\u0436\u0430\u0442\u0438\u044f \u0438 \u0440\u0430\u0441\u043f\u0430\u043a\u043e\u0432\u043a\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 OpenZL, \u043f\u043e \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044e \u0441 \u0444\u043e\u0440\u043c\u0430\u0442\u0430\u043c\u0438 Zstd \u0438 XZ \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u0441\u0436\u0430\u0442\u0438\u044f \u0438 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c \u0440\u0430\u0431\u043e\u0442\u044b. OpenZL \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d \u0434\u043b\u044f \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0441\u0436\u0430\u0442\u0438\u044f \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043d\u0430\u0431\u043e\u0440\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0445 \u043f\u0440\u0438 \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u043c \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u0438, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0438\u0445 \u043f\u043e\u043b\u044f \u0441 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u043c\u0438 \u043f\u043e\u0432\u0442\u043e\u0440\u044f\u044e\u0449\u0438\u043c\u0438\u0441\u044f \u0442\u0438\u043f\u0430\u043c\u0438 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438. \u041a\u043e\u0434 OpenZL \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 C\/C++ \u0438 \u043e\u0442\u043a\u0440\u044b\u0442 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":144567,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-144566","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47OpenZL tihenduss\u00fcsteem, mis edestab Zstd ja XZ struktureeritud andmete kiirusel ja tihendustaseme poolest | ProHoster","description":"Meta* ettev\u00f5te esitles OpenZL andmete tihendamise ja dekompressimise t\u00f6\u00f6riistu, mis n\u00e4itavad v\u00f5rreldes Zstd ja XZ formaadiga k\u00f5rgemat tihendustaset ja t\u00f6\u00f6kiirus. OpenZL on v\u00e4lja t\u00f6\u00f6tatud efektiivseks struktureeritud andmestike tihendamiseks, n\u00e4iteks masin\u00f5ppes kasutatavate andmestike ning ladude jaoks, mis sisaldavad erinevate korduvate andmet\u00fc\u00fcpidega v\u00e4lju. OpenZL kood on kirjutatud C\/C++ ja on avatud.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/sistema-szhatiya-openzl-operezhayushhaya-zstd-i-xz-po-skorosti-i-urovnyu-szhatiya-strukturirovannyh-dannyh","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0421\u0438\u0441\u0442\u0435\u043c\u0430 \u0441\u0436\u0430\u0442\u0438\u044f OpenZL, \u043e\u043f\u0435\u0440\u0435\u0436\u0430\u044e\u0449\u0430\u044f Zstd \u0438 XZ \u043f\u043e \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u0438 \u0443\u0440\u043e\u0432\u043d\u044e \u0441\u0436\u0430\u0442\u0438\u044f \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 | ProHoster","og:description":"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Meta* \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 \u0434\u043b\u044f \u0441\u0436\u0430\u0442\u0438\u044f \u0438 \u0440\u0430\u0441\u043f\u0430\u043a\u043e\u0432\u043a\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 OpenZL, \u043f\u043e \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044e \u0441 \u0444\u043e\u0440\u043c\u0430\u0442\u0430\u043c\u0438 Zstd \u0438 XZ \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u0441\u0436\u0430\u0442\u0438\u044f \u0438 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c \u0440\u0430\u0431\u043e\u0442\u044b. 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